Glass Beads for Wet Grinding, Milling & Dispersion – Medium GSR
Our GSR glass beads are hardened soda-lime glass spheres designed for wet grinding, bead milling, dispersing and mixing applications.
Available in sizes from approximately 0.25 mm to 4.4 mm, these medium-size glass beads are used in industrial processing of paints, pigments, inks, dyes, coatings, chemicals, minerals and other liquid suspensions.
The beads are rounded, washed, polished and carefully screened to produce clean, consistent grinding and dispersion media.
Glass Beads for Wet Grinding & Bead Milling
GSR glass beads are commonly used as grinding and dispersing media in horizontal and vertical bead mills.
Applications include processing:
- Paints
- Pigments
- Printing inks
- Dyes
- Coatings
- Chemicals
- Minerals
- Agrochemicals
- Pharmaceutical materials
- Liquid dispersions
Their spherical shape and consistent size help provide repeatable movement and contact throughout the milling process.
High-Quality Hardened Soda-Lime Glass
These grinding beads are manufactured from hardened soda-lime glass using a controlled rounding, washing, polishing and sieving process.
The resulting beads provide:
- High roundness
- Smooth surfaces
- Controlled particle-size ranges
- Good crush resistance
- Low contamination
- No free silica
- Consistent performance in wet processing systems
Medium GSR Glass Bead Sizes
| Stock # | Diameter | Approx. Mesh |
|---|---|---|
| GSR-3 | 0.25–0.50 mm | 50–60 |
| GSR-5 | 0.40–0.60 mm | 30–40 |
| GSR-7 | 0.60–0.80 mm | 20–30 |
| GSR-9 | 0.75–1.00 mm | 18–20 |
| GSR-11 | 1.00–1.25 mm | 16–18 |
| GSR-14 | 1.25–1.65 mm | 13–16 |
| GSR-17 | 1.55–1.85 mm | 11–13 |
| GSR-19 | 1.70–2.10 mm | 10–12 |
| GSR-22 | 2.00–2.40 mm | 8–10 |
| GSR-27 | 2.40–2.90 mm | 7.5–8 |
| GSR-30 | 2.85–3.45 mm | 6–7 |
| GSR-35 | 3.40–4.00 mm | 5.5–6 |
| GSR-40 | 3.80–4.40 mm | 5–5.5 |
Other Uses for GSR Glass Beads
In addition to wet grinding and milling, GSR glass beads may be used for:
- Paint and coating dispersion
- Pigment processing
- Mechanical and galvanized plating
- Water filtration
- Decorative finishes
- Spacer bead applications
- Electronics fillers
- Thermoplastic and duroplast fillers
- Optical polishing applications
- Chemical and industrial processing
Technical Characteristics
- Material: Hardened soda-lime glass
- Mohs hardness: ≥6
- Refractive index: approximately 1.5188
- Transformation temperature: approximately 549°C
- Softening point: approximately 734°C
- High spherical consistency
- No free silica
- Multiple controlled size ranges available
Packaging & Bulk Pricing
GSR glass beads are packaged in 44 lb units.
Standard pallet packaging is approximately 50 bags / 2,200 lbs per pallet.
Minimum online order: two 44 lb bags / 88 lbs.
